help, anyone who has used the HIT program

[Doc.Sust]

The IRON MAN "HIT" program consist of doing two warm up sets per body part. The first warm up set should be very light and about 15 reps. The second warm up set will consist of a moderate weight for 6-8 reps. (In noway should these sets be fatiguing). One warm up set will be sufficient for some muscle groups. For e.g.: biceps after training the back and shoulders after chest work. Next 3 total work sets per body part are to be performed. Work the type 2- B-fibers (6-10) first.Then perform a 2nd set hitting the low repped A-fibers(3-5). Finish off by blasting the C-fibers (11-15). When working the legs and/or traps use a high-mediun-low rep set/scheme. Use a medium-low-high rep/set scheme when doing the rest of your upper body

ok explain this to me for legs, lets use squats. what does ironman mean when he says"use a high-medium-low rep set scheme when doing legs" some one explain, 1 set of squats, how many reps
2nd set how many reps, 3rd set , again how many reps???

also could you explain the rep scheme for upper body to,the med ,low,high rep/set scheme???